Table II. 



CALCULATION FOB FINDING THE LATITUDE FROM OBSERVATIONS MADE NEAR NOON WITH THE REPEATING REFLECTING CIRCLE. 



11»60 24".S 



Noon by 

 4 49.3 



Chronom 





45.65 



46 3.3 



4 21.0 



37.15 



46 35.0 



3 49.3 



28.67 



47 0.5 



3 33.8 



22.66 



47 33.0 



2 61.3 



16.01 



47 58.0 



2 36.3 



11.68 



48 29.7 



1 54.6 



7.16 



46 56.0 



1 28.3 



4.25 



49 31.7 



52.6 



1.51 



49 55.0 



S9.3 



0.47 



11 51 37.5 



1 13.2 



2.93 



51 59.5 



1 35.2 



4.94 



■ 62 26.7 



2 2.4 



ai7 



52 45.5 



2 21.2 



10.87 



63 18.5 



2 54.2 



16.55 



58 48.5 



3 24.2 



22.74 



54 16.5 



3 52.2 



29.41 



54 39.5 



1 15.2 



35.62 



55 11.5 



1 47.2 



41.98 



55 36.5 



5 12.2 



63.16 











31 37.2 



229.27 



11 50 24.3 



6 42.2 





11 57 6.5 



88.23 



57 28.5 



7 4.2 



98.13 



57 50.0 



7 25.7 



108.33 



58 8.5 



7 44.2 



107.61 



58 33.7 



8 9.4 



130.62 



58 52.0 



8 27.7 



140.57 



59 13.7 



8 49.4 



152.94 



59 35.7 



9 11.4 



165.81 



59 56.5 



9 32.2 



178.55 



20.5 



9 56.2 



193.84 



Instrument at 1167° 20" 26"] 



1st Repetition [592=1' 5'] 



1st compound series. 

 2d compound series. 



2d Repetition [S06'S8'4O"l 



83 02.6 1374.5S 3d Repetition 120° 49' 24*] 



Refraction — Parallax, 

 Correction of declination, 

 Reduction to Meridian, 



Corrected declination. 



Suns declination, Cos. 17= 

 Log. Co. Lai. 50 



Constant Factor, 

 Ar. Co. sin. zcn. Distances, 

 Log. 175.11 



! 14.30 

 2.11 

 14.98 



20 [434 40 39 



Altitudes, 

 Z. Distance, 

 Declination, 



21 44 1.95 

 68 15 58.05 

 17 56 2.29 



56 2.29 



9.9782836 

 = 9.80504G1 



= 9.7833297 





17 56 9.79 



229.27 



i 9.7833297 



= 0.0320246 

 = 2.2433109 





■ 0.0319667 

 i 2.3603472 



2.0586652 

 A [ '146 



2.1756436 

 A [ 149.8 



11".45 





14"98 





592 - 01' 05" 





A [434 37 35 



21 43 62.75 

 68 16 07.25 

 17 56 9.79 





50 19 57.46 



% 13th November 1817. 



Diurn. var. © dec. 16' 0".5 - 



26 26.8 

 At. Co. Log. 24 hours, 



2.982497 



3.300248 

 5.063486 



A [""'6 

 1.76 



,'u [3.5 difference. 

 .17 4th series. 



9.7883297 

 O.0310204 

 2.6067897 



[434 10 14 



21 42 32.2 

 68 17 27.8 

 17 56 28.05 



21 13 57.35 

 68 16 01.65 

 17 56 6.06 



Quicksilver. 



Horizon. 



Thermometer = 11° 2 = 9.99SO 9.9980 



Barometer 74875 = 9.9933.. 9.9933 



Z. Dist. 68° = 2.1561 2.1561 



16 = 68- 17".6 = 64 



+ 



38.76 



17 66 33.42 









0.0319969 

 3.2601639 



A [1162.7 

 38'..76 



157*20-26» 

 20 49 21 



, [1307 28 58 



"""°°"> 50 19 66.59 



In the preceding calculations, the Cemigr.de Thermometer and the Metricd Barometer are employed. 





2.1542 



2.163S 



Refraction, 



142.6 



142,5 



Parallax, 



8.2 



8.2 











131.1 



134.3 



Refraction — Parallax, 



S' 11".4 



2'14".3 



S.9S2197 





2.982497 



3I'37".2 =3.278113 



83'2''.6 



- 3.697151: 



5.063486 





6.063486 



1.324096 



1.740439 



A [21".l 





A [ fi 5".4 









2d = 2.11 





3d = 5.54 













B5.i } a»»™°°n- 







76.5 sum. 







17.6 forenoon. 







A [58.9 difference. 







1.96 Corr. for 5th series. 





